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Finding the Fourth Proportional to 21,792.84, 30,066.01 and 13,292.02

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Solution

The fourth proportional to 21,792.84, 30,066.01 and 13,292.02 is: 18,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,792.84 : 30,066.01 = 13,292.02 : x
  2. Step 2: Convert to fraction form
    21,792.84/30,066.01 = 13,292.02/x
  3. Step 3: Cross multiply
    21,792.84x = 30,066.01 × 13,292.02
  4. Step 4: Simplify right side
    21,792.84x = 399,638,006.24
  5. Step 5: Solve for x
    x = 399,638,006.24/21,792.84
  6. Step 6: Final answer
    x = 18,338.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.